package study;

import java.util.Date;
import java.lang.*;

public class TestAdd {
    public static void main(String[] args) {
        int a = 3;
        int b = a++;
        System.out.println(System.currentTimeMillis());
        System.out.println("a=" + a);
        System.out.println("b=" + b);

        System.out.println(2<<10);
        System.out.println(System.currentTimeMillis());
        Date date = new Date();
        System.out.println(date.toString());
        System.out.println(date.toString().compareTo("Sun Jun 28 14:47:07 CST 2020"));
        int x = 3;
        int y = ++x;
        System.out.println("x=" + x);
        System.out.println("y=" + y);
    }
}
